refactor: move DSL inner API to app/dsl.py with explicit account_email attribution

api/controllers/inner_api/__init__.py

@@ -16,12 +16,14 @@ api = ExternalApi(
 inner_api_ns = Namespace("inner_api", description="Internal API operations", path="/")
 
 from . import mail as _mail
+from .app import dsl as _app_dsl
 from .plugin import plugin as _plugin
 from .workspace import workspace as _workspace
 
 api.add_namespace(inner_api_ns)
 
 __all__ = [
+    "_app_dsl",
     "_mail",
     "_plugin",
     "_workspace",